Auxiliary refrigerator-door.



C. G. SCHMIDT. AUXILIARY REFRIGERATOR DOOR.

APPLIGATION FILED JUNE 13, 1912.

1,070,186, Patented Aug". 12, 1913.

ITED STATES PATENT OFFICE.

CHARLES G. SCHMIDT, 0F CINCINNATI, OHIO, ASSIGNOR TO CINCINNATI BUTCHERS SUPPLY CO., OF CINCINNATI, OHIO, A CORPORATION OF'OHIO.

AUXILIARY REFRIGERATOR-DOOR.

Specification of Letters Patent.

Patented Aug. 12,1913.

Application filed June 13, 1912. Serial No. 703,371.

To all whom it may concern: v Be it known that I, CHARLES G. SCHMIDT, a citizen of the United States, and residing in Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Auxiliary Refrigerator-Doors; and I do declare the following to be a clear, full, and exact de-. scription of the invention, attention being called to the drawing which accompanies this application and forms a part thereof.

Such doors are generally used in connection with inclosures like cold-storage compartments, cooling rooms and refrigerators provided with over-head track-connections upon which meat-products, carcasses, etc., are moved. These objects, while so moved, are-carried on trolley rollers adapted to travel upon these tracks and openings of sufiicient size and fitted with doors are provided to permit these objects to pass in and out of these inclosures. Usually the regular openings which serve for access to these inclosures are also utilized for this purpose. These openings are upwardly extended at a certain point, usually in the center, to permit positioning of track-rails at an elevation where they do not interfere with the opening and closing of the door. This extended part of the opening must be of a size to also clear the trolley rollers traveling upon the track-rails and the auxiliary doors, forming the subject of this invention, are used to close this extended part of the opening. Obviously the opening and its extended part must both be open at the same time when a loaded trolley roller passes on the track, the extended part in order to clear the trolley roller, and the opening below it in order to clear the object suspended on this roller. It is desirable that both openings may be opened and closed at the same time which presumes simultaneous manipulation of the respective doors. Various devices have been provided for this purpose and my invention relates to simplified and improved means whereby this object is accomplished.

In the following specification and particu- 'larly pointed out in the claims at the end thereof, will be found a full description of my invention, together with its operation, parts and construction, which latter is also 'A small door in form of two wings ee illustrated in the accompanying drawing, in which Figure 1, illustrates my invention in perspective view, the various parts of the same being shown and with the doors in open position. Fig. 2, shows at enlarged scale an elevation of theauxiliary doors in their closed position. Fig. 3, shows a horizontal section of this figure, taken on line 33 thereof. Fig. 4:, in a similar section shows these doors in open position. Fig. 5, is a vertical section of Fig. 2, on line 5-5 thereof. Fig. 6, shows in perspective view details of construction of certain of the operative parts and as viewed from the rearside of the auxiliary-doors.

In the drawing, A indicates an object, which maybe a beefside, to be moved from one place to another, as for instance with respect to a cooling-room of which B is one of the inclosing walls. A track-rail O is provided for this purpose upon which this object is carried by means of a trolley-roller a on which it is suspended. Means like brackets, ceiling-hangers, (not shown) are used to support these rails. An opening D, of sufiicient size is provided in wall B, to clear. the object A, while passing through and a door (Z, supported on hinges 1010 is provided to close this opening. To prevent interference by rail O, with the manipulation of door (Z, opening D is extended upwardly as shown at E, to permit positioning of said rail above door (Z, said extended opening being sutficiently large to clear also the rollers traveling upon said track-rail.

both supported to swing each on vertically alined hinges 11, is provided to close this extended part E, of opening D. It will be observed that as to width, these small doors are wider than opening E and accordingly wings ee are hinged against the outside of wall B, the hinges being rigidly secured against such outside at points beyond the upright edges of opening E, and as shown Observe Figs. 3 and 4. The result is that in closing, these wings move against wall B, where they come to a dead-stop which positively limits their closing position as best shown in Fig. 3. These wings are arranged to clear the trackrail which they meet with their free edges and by prefto be above the passing trolley-rollers.

erence their width is limited accordingly through their entire height to keep these free edges entirely clear of each other. This is oi advantage because inasmuch as these doors, being subject to chai'iging temperatures and the etlects of condensed moisture, alternately shrink and swell, interference with their proper opening and closing is prevented. To close the open space resulting trom this arrangement, I provide a metallic lap-plate 13, attached to one of the wings beyond the free edge of which it.

projects sulliciently for the purpose. Above the upper end of these edges this space between them is closed in asuitable manner as for instance by a weather-strip 14. Both openings E and D, are used for clearing a moving trolleya'oller and its load depending therefrom, and inasmuch as this use is always a simultaneous one as to both openings, it follows that the doors for both these openings must be in a similar and corresponding position. For these reasons means have been provided whereby both doors may be caused to open and close simultaneously, the joint effect being obtained by manipulation of one door only, which is the larger one (Z, since the same, being below, is more readily accessible for thispurpose. Thus to be more specific, these means operate so that it the larger door (Z is manipulated for opening or closing, both wings c@ are caused to follow automatically, being either open or closed the same as door (Z. This effect is obtained by a spring-connection whereby the two wings are attached to each other, said connection being so located as A spring in suitable form, a coil-spring by preference as shown at 15, is used and firmly attached at its ends to the inner side of wings 6-0. This spring is of such a length that it permits when extended the wings to open to the required extent and as shown in Figs. 1 and et, while opening in excess is prevented by the particular formation of the hinged edges of the wings as shown at 16, whereby their outer corners are caused to act stops by their contact with wall B. When the wings are closed as shown in Figs. 2, 3 and 5, this spring is bent and under constraint in opposition to the conditions which prevent it from assuming its extended position shown in Figs. 1 and it.

At the upper edge of big door (Z, there is a projection, by preference in form of a plate 17 which, being properly located, moves when door (Z is being closed, against one of the wings and thereby closes the same as well as the other wing which necessarily follows by reason of spring 15 which is attached to both wings. In order to have this spring-connection act promptly upon both wings and to prevent that wing which is actuated directly by the closing plate, from moving ahead of the other wing, I support the spring by means of an arm 18, secured to that particular wing. The spring is thereby sustained at the beginning of the movement and forced to follow immediately the wing which isdirectly'aetuated.

It is preferable to provide means to assist the action of the spring when starting the wings from their seat at the beginning of the opening movement. A projection which may be in form of a pin 19 and provided at the upper edge of the door, may serve for this purpose by acting againsttheainside of one of the wings when the big door is opened. For convenience in manufacture this pin forms a connected part of the 010s ing plate so that it may be held inv place by the same means whereby said plate is attached.

Having described my invention, I claim as new:

1. In combination with the inclosure of a cooling room which has an openingto admit an over-head track-rail, a door for this opening which consists of two vertically hinged wings, one on each side of the rail and spaced at their free vertical edges to the extentof the width of this rail, means to close the space between the opposite edges of the wings andmeans transverselyan ranged across the upper edges of the wings to close the open space between their vertical edges at its upper end.

2. In combination with the inclosure of cooling room which has an opening to admit an over-head track-rail between its upright edges, a door consisting of two wings adapted to close the same on each side of the rail, each wing extending beyond the edges of this opening, and hinges secured in a rigidly fixed position on the outside of the inclosure whereby these wings are supported.

3. In combii'lation with the inclosure of a cooling room which has an opening to ad init an over-head track-rail, a door for this opening which consists of two vertically hinged wings, one on each side of this rail and a spring-connection between these two wings having a normal tendency to open this door and to hold the wings thereof apart.

4:. In combination with the inelosure of a cooling-room having an access-opening which is extendedlat a particular point to admit an overhead track-rail, a door for this opening andan auxiliary door for the extension thereof and which consists of two wings, vertically hinged oneon each side of the trackrail, means whereby thesewings are connected. to each other in a manner that movement 01": one involves also movement of the other, a device on the door first mentioned and adapted, when said door is being moved, accordingly to act against the outsideof one of the wings of the auxiliary door to close the same and an additional device on this door adapted to act from the inside against the auxiliary door to open the same.

5. In combination with the inclosure of a cooling room having an access-opening which is extended at a particular point to admit an overhead track-rail, a door for this opening and an auxiliary door for the extension thereof which consists of two wings, vertically hinged, one on each side of the trackrail, a spring-connection whereby both wings are attached to each other in a manner that movement of one involves also movement of the other and means provided on the door first mentioned and adapted, when said door is being moved, to act upon the auxiliary door in a manner to change the position of the same.

6. In combination with the inclosure of a cooling-room having an access opening which is extended at a particular point to admit an over-head track-rail, a door for this opening and an auxiliary door for the extension thereof which consists of two wings, vertically hinged, one on each side of the track-rail, a spring-connection whereby both wings are attached to each other in a manner that movement of one involves also movement of the other and whereby the wings of the auxiliary door, when open, are held apart and means provided on the door first mentioned and adapted, when said door is being moved, to act upon the auxiliary door in a manner to change the position of the same.

7. In combination with the inclosure of a cooling room having an access-opening which is extended at a particular point to admit an over-head track-rail, a door for this opening and an auxiliary door for the extension thereof which consists of two wings, vertically hinged, one on each side of the trackrail, a spring-connection whereby both wings are attached to each other in a manner that movement of one involves also movement of the other and means provided on the door first mentioned and adapted, when said door is being moved, to act upon the auxiliary door in a manner to cause it to occupy a position which corresponds always to the position of the other door.

8. In combination with the inclosure of a cooling-room, having an access-opening which is extended at a particular point to admit an over-head track-rail, a door for this opening and an auxiliary door for the extension thereof which consists of two wings, vertically hinged, one on each side of the track-rail, a spring attached to both wings in a manner causing them to move together, it being, when said wings are closed, under constraint and means adapted to relieve this condition of the spring when the door first mentioned is opened.

9. In combination with the inclosure of a cooling-room having an access-opening which is extended at a particular point to admit an overhead trackrail, a door for this opening and an auxiliary door for the extension thereof which consists of two wings, vertically hinged, one on each side of the track-rail, a springconnection whereby both wings are attached to each other in a manner that movement of one involves also movement of the other and a closing plate provided on the door first mentioned and adapted, when said door is being closed, to act upon the auxiliary door in a manner to close it likewise.

' 10. In combination with the inclosure of a cooling-room which has an opening to admit an overhead trackrail, a door for this opening which consists of two vertically hinged wings, one on each side of this rail, and a spring connected to the inside of both wings and adapted to assume a constrained condition when the auxiliary door moves into one of its extreme positions.

In testimony whereof, I hereunto aflix my signature in the presence of two witnesses.

CHARLES Gr. SCHMIDT.

Witnesses:

C. SPENGEL, T. LEBEAU.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

